bd09523e94
- README: add 前端 v2 (React SPA) section (dev/build/codegen/hosting/gates), update directory listing, drop stale Jinja descriptions - architecture-overview: retire '不引入前后端分离' constraint; reflect SPA + JSON API - roadmap: mark M2 done - remove orphaned jinja2 dependency (recompile requirements*.txt; no other churn) - delete empty tests/test_auth.py stub; drop dead _extract_csrf_token in test_api_data - verified image still builds and app imports with the slimmer deps